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    <title>ID 选择器</title>
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        /* ID 选择器开头为# */
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    <h1 id="heading">ID selector</h1>
    <p>Veggies es bonus vobis, proinde vos postulo essum magis kohlrabi welsh onion daikon amaranth tatsoi tomatillo
        melon azuki bean garlic.</p>

    <p id="one">Gumbo beet greens corn soko <strong>endive</strong> gumbo gourd. Parsley shallot courgette tatsoi pea
        sprouts fava bean collard
        greens dandelion okra wakame tomato. Dandelion cucumber earthnut pea peanut soko zucchini.</p>
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